IBPS RRB Officer Prelims 16 Sep 2017 Paper

(i) All plots are themes → UniversalAffirmative (A–type).
(ii) Some themes are fictions →Particular Affirmative (I–type).
(iii) No fiction is a biography →Universal Negative (E–type).
(iv) Some fictions are not biographies→Particular Negative(O–type).
(3) Some letters are posts.All posts are digits.
I + A⇒ I–type of Conclusion“Some letters are digits”.
Conclusion I and ConclusionII form Complementary Pair.
Therefore, either ConclusionI or Conclusion II follows.